Chapter 3

Question 1

Rotation:

Answer 1

Day. Turning of a body on its axis.

Question 2

Revolution:

Answer 2

Year. Motion of a body around a point outside of the body.

Question 3

Seasons are caused by:

Answer 3

Earth’s axis of rotation since it’s tipped 23.5 degrees from the perpendicular to its orbit.

Question 4

The sun is located where in the relationship between the Earth and constellations?

Answer 4

The Sun is in front of the constellations since it is closer to us than constellations themselves. Sun moves Eastward in the Ecliptic.

Question 5

Other planets are only visible due to ___

Answer 5

the reflecting light coming from the Sun. They do not produce visible light of their own.

Question 6

Planets that have an orbit outside of Earth’s orbit will move _____

Answer 6

Slower.

Question 7

Mercury is only visible when ____. (HINT: Mercury is close to the sun)

Answer 7

the sun rises and sun sets.

Question 8

True or False: The Earth and Moon’s orbit is occasionally the same.

Answer 8

FALSE: the orbits will never be the same because it is never in the same plane.

Question 9

Moons shape changes when it _____ ______ ___ ____.

Answer 9

Moves around the Earth. Sunlight also affects this.

Question 10

How many sides of the moon are visible to us?

Answer 10

1 side. The same side of the Moon is always facing us.

Question 11

Moon Phases are caused by:

Answer 11

the position of the Sun, Earth, and Moon.

Question 12

Synodic Month:

Answer 12

the time that Moon needs in order to complete one cycle of phases, it is equal to 29.53 days.

Question 13

Sidereal:

Answer 13

One full orbit around the Earth.

Question 14

Lunar Eclipse happens when ___

Answer 14

The moon is in Earth’s shadow. There’s a red color because of the long wavelengths in the atmosphere.

Question 15

Umbra:

Answer 15

The region of total shadow.

Question 16

Prenumbra:

Answer 16

Where part of the sun is peeking around the Earth.